<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"
                      xmlns:th="http://www.thymeleaf.org"
                      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
<head>
  <title>Spring Security Example </title>
</head>
<body>
<div th:if="${param.error}"> 用户名或密码错 </div>
<div th:if="${param.logout}"> 您已注销成功 </div>
<form th:action="@{/login}" method="post">
  <div><label> 用户名 : <input type="text" name="username"/> </label></div>
  <div><label> 密 码 : <input type="password" name="password"/> </label></div>
  <div><input type="submit" value="登录"/></div>
  <input type="checkbox" name="remember-me"/> Remember me
</form>
</body>
</html>